video_capture_impl_manager.h revision 868fa2fe829687343ffae624259930155e16dbd8
15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// VideoCaptureImplManager manages video capture devices in renderer process. 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// The video capture clients use AddDevice() to get a pointer to 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// video capture device. VideoCaputreImplManager supports multiple clients 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// accessing same device. 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef CONTENT_RENDERER_MEDIA_VIDEO_CAPTURE_IMPL_MANAGER_H_ 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define CONTENT_RENDERER_MEDIA_VIDEO_CAPTURE_IMPL_MANAGER_H_ 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <list> 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <map> 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "base/message_loop/message_loop_proxy.h" 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/threading/thread.h" 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/synchronization/lock.h" 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "content/common/content_export.h" 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "media/video/capture/video_capture.h" 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace content { 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class VideoCaptureImpl; 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class VideoCaptureMessageFilter; 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class CONTENT_EXPORT VideoCaptureImplManager 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : public base::RefCountedThreadSafe<VideoCaptureImplManager> { 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) VideoCaptureImplManager(); 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Called by video capture client |handler| to add device referenced 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // by |id| to VideoCaptureImplManager's list of opened device list. 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // A pointer to VideoCapture is returned to client so that client can 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // operate on that pointer, such as StartCaptrue, StopCapture. 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual media::VideoCapture* AddDevice( 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) media::VideoCaptureSessionId id, 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) media::VideoCapture::EventHandler* handler); 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Called by video capture client |handler| to remove device referenced 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // by |id| from VideoCaptureImplManager's list of opened device list. 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void RemoveDevice(media::VideoCaptureSessionId id, 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) media::VideoCapture::EventHandler* handler); 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 45c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // Make all existing VideoCaptureImpl instances stop/resume delivering 46c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // video frames to their clients, depends on flag |suspend|. 47c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) virtual void SuspendDevices(bool suspend); 48c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) VideoCaptureMessageFilter* video_capture_message_filter() const { 50868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) return filter_.get(); 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) protected: 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual ~VideoCaptureImplManager(); 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) friend class base::RefCountedThreadSafe<VideoCaptureImplManager>; 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) struct Device { 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Device(VideoCaptureImpl* device, 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) media::VideoCapture::EventHandler* handler); 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ~Device(); 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) VideoCaptureImpl* vc; 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::list<media::VideoCapture::EventHandler*> clients; 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) }; 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void FreeDevice(VideoCaptureImpl* vc); 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) typedef std::map<media::VideoCaptureSessionId, Device*> Devices; 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Devices devices_; 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::Lock lock_; 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_refptr<VideoCaptureMessageFilter> filter_; 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::Thread thread_; 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_refptr<base::MessageLoopProxy> message_loop_proxy_; 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(VideoCaptureImplManager); 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace content 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // CONTENT_RENDERER_MEDIA_VIDEO_CAPTURE_IMPL_MANAGER_H_ 83